/Engine/Plugins/Editor/UVEditor/Source/UVEditorTools/Public/ContextObjects/UVToolContextObjects.h
Broadcast by the 3D live preview viewport on Render() so that mechanics/tools can render there.
typedef TMulticastDelegate_OneParam< void, [IToolsContextRenderAPI](API\Runtime\InteractiveToolsFramework\IToolsContextRenderAPI) *RenderAPI > FOnRender